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PCAT Chemistry ( Chemistry) Practice Tests & Test Prep by Exam Edge - Free Test


Our free Pharmacy College Admission Test - Chemistry ( Chemistry) Practice Test was created by experienced educators who designed them to align with the official Pharmacy College Admission Test content guidelines. They were built to accurately mirror the real exam's structure, coverage of topics, difficulty, and types of questions.

Upon completing your free practice test, it will be instantly reviewed to give you an idea of your score and potential performance on the actual test. Carefully study your feedback to each question to assess whether your responses were correct or incorrect. This is an effective way to highlight your strengths and weaknesses across different content areas, guiding you on where to concentrate your study efforts for improvement on future tests. Our detailed explanations will provide the information you need to enhance your understanding of the exam content and help you build your knowledge base leading you to better test results.

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Pharmacy College Admission Test - Chemistry - Free Test Sample Questions

Identify the example of a broad-spectrum antibiotic.

Correct Answer:
both a and b


the question presented asks to identify an example of a broad-spectrum antibiotic from the options provided. the correct answer is "both a and b," indicating that both options listed as a (chloramphenicol) and b (ampicillin) are correct examples of broad-spectrum antibiotics.

broad-spectrum antibiotics are defined as those that have the capability to act against a wide variety of both gram-positive and gram-negative bacteria. this makes them particularly useful in situations where the specific cause of an infection is unknown and a treatment that covers a wide range of possible bacteria is needed.

chloramphenicol, listed as option a, is a classic example of a broad-spectrum antibiotic. it is effective against a variety of bacteria, including both gram-positive and gram-negative strains. chloramphenicol works by inhibiting protein synthesis in bacteria, thereby stopping their growth and replication.

ampicillin, mentioned as option b, is another well-known broad-spectrum antibiotic. it belongs to the penicillin class of antibiotics and is effective against a wide range of bacterial infections. ampicillin works by interfering with the ability of bacteria to form their cell walls, which is essential for their survival.

the choice "both a and b" as the correct answer highlights the fact that both chloramphenicol and ampicillin meet the criteria for broad-spectrum antibiotics. this is consistent with their wide usage in treating various bacterial infections where a broad-spectrum action is advantageous or necessary.